Question

What is shadow? How it is formed?

Answer 1

Answer:

Shadows are made by blocking light. Light rays travel from a source in straight lines. If an opaque (solid) object gets in the way, it stops light rays from traveling through it. This results in an area of darkness appearing behind the object. The dark area is called a shadow.

Explanation:

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Answer 2

Answer:

shadow is a black patch formed when the light is blocked by an opaque object.